Does the VPN provider see traffic from the network from which the VPN connection is established?

Question

VPN

All DVS. In the context of a comprehensive pandemic and remote work, the question was: does the VPN administrator see the traffic of the network (home) from which I establish a VPN connection?

More details. There are two devices on the home network: a laptop (Wi-Fi connection) and a desktop PC (cable connection). A laptop to access the resources of the employer (company " A ") establishes a VPN connection. From a desktop PC, another person works for another company (" B ") without any VPN connections (directly from the home network).
Can the admin of company " A " monitor the traffic used by an employee of company " B "?

Sorry for the "poor" technical explanation.

Answer 1

In general, no, of course, from the point of view of a machine on the network, it is almost impossible to find out what another machine on the network is doing.
It means that the administrator of company A can configure and install software on a laptop?
VPN raise by means of a laptop or an external router and destroyed by vlans? VLANs provide a good level of network isolation.
If the laptop itself is connected to the home network and vpn is set up on it and not outside, then if the admin of company A can install his software on it and manage it, then he can access the home network, limited, with general rights.
This means it won’t receive other people’s traffic, but it can scan the network for locally raised services (test, for example), it can try to hack the router (from the inside it’s usually easier than from the outside), and in this case you can already get access to the logs, which machine climbs which sites .

Answer 2

Only a small part of the traffic - broadcast packets, for example. The main PC traffic goes completely past the laptop and VPN

Answer 3

The fact of connection to VPN sees.